OCZ Vertex 120 GB SSD review

Memory (DDR4/DDR5) and Storage (SSD/NVMe) 366 Page 7 of 12 Published by

teaser

SSD Performance Atto Disk Benchmark

 

Atto Disk Benchmark

One of the finest tools available to measure storage performance is ATTO. I love it to death as it is so reliable and produces such accurate results. The great thing about ATTO is that we can test with predefined block sizes. So we can test with a 32MB sequence of 4KB files, yet also 32MB in 1MB files. This gives us an excellent scope of overall performance with small and large files.

ATTO Write performance

The most important task for the SSD is... writing files. We scale 4KB block sizes to large 1024KB block sizes in bursts of 32MB with a queue depth of 4 and then measure how fast the storage device is dealing with them. The storage units we used:

  • WD1500HLFS Velociraptor (150GB)
  • OCZ Core MLC (64GB)
  • G.Skill SSD Titan MLC (128GB)
  • OCZ Vertex MLC (120GB)

We added the newest model Western Digital WD1500HLFS VelociRaptor to our test suite, it is the fastest and most expensive 10k RPM HDD your money can get you. It's write performance however is unprecedented good.

As you can see, the performance is astounding. The 64MB cache memory just kicks in really hard. It's also a bit tricky for this particular test, since our tested files fit perfectly in the cache... what is it actually showing? Cache or actual write performance?

None the less, the results don't lie... that is sheer amazing write performance. Even 4KB files are written much faster than a traditional HDD now, at ~68MB/sec. That's double to triple the speed of any SSD we've tested, thanks to that 64MB cache.

ATTO Read performance

Once we noticed the read performance of the tested unit we were a little flabbergasted. The SSD reaches 232 MB/sec performance. Follow the bright RED line, while we do see the SSD is slower at really small block sizes, again it definitely is much faster than most SSDs we've tested. With a 32KB file size we already jump to more than 180 MB/sec.

We did have a little performance dip after we passed 256KB block files. This might have been an anomaly though. Though we ran the test three times with each time similar results.

Share this content
Twitter Facebook Reddit WhatsApp Email Print